PCMGSetDistinctSmoothUp

sets the up (post) smoother to be a separate KSP from the down (pre) smoother on all levels and adds the suffix _up to the options name

Synopsis

#include "petscksp.h" 
PetscErrorCode PCMGSetDistinctSmoothUp(PC pc)

Logically Collective

Input Parameter

• pc - the preconditioner context

Options Database Key

• -pc_mg_distinct_smoothup - use distinct smoothing objects

Note

This does not set a value on the coarsest grid, since we assume that there is no separate smooth up on the coarsest grid.

See Also

PCMG, PCMGSetNumberSmooth()

Level

advanced

Location

src/ksp/pc/impls/mg/mg.c

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